Insulator support



I To all whom it may concern; Be it known that I, EnsoN l which the mason 0. sessions, or on on Application filed iTune 13, 1919.

rnsumron sorrow.

citizen of the United-States, residing at Chi-" cago, in the county of- Cook and State of the base so that the engagement' between said Illinois, have nvented a eertainnew'and use;

ful Improvement in Insulator. Suppoftaof following is a SPEClfiCfltlOII. I invention relates to. an nnprtaved form of insulator ..support by which an insulator may be. mounted and clamped in a desiredposition to supportanjelectrical conductor, portion of the support being readily adjustable relatively'to and removable from its supporting base thus permitting-the bases of such supports to be in? stalled before "the clamping membersand insulators are'put in-place.

My inventionwill best whichbe understood by reference. to the accompanying drawings showinga preferred embodiment thereof in -p in end elevation clamping an insulator in its supportingpo= ing a cylindrical sition, a part of-the insulat cut away to more clearly show the construction of the support.

Fig. 2 is aside elevation. of the parts shown in Fig. 1, Fig. 3 1s a or and base being bottom view of the base and adjacent ends of the clampingmembers shown in Fig. 1,'

Fig. a shows in a view similar to Fig. 1,

one of theclamping membersbefore being, I

' members 14: is formed as shown 1n F1g.- i,

used,

Fig.

1 a modified construction of basefor engagsupport instead of a flange base as shown in Fig. 1, the clampingmembers being of the same construction in this case as shown in Fig. 1, and

Fig. 6 shows in a view the parts shown in Fig. 5.

Similar numerals refer throughout the several views. v

2 and 3, my improved fiangebase 10 having- As shown in Figs. 1, supportconsists of a similar to Fig. 2

to similar parts a central circular aperture 11 which is under cut at its inner end as indicatedat 12 to a, larger'diameter than the diameter of the remaming portion of are formed through the said aperture. Holes 13 projecting flange portions of the base to receive fastening devices not shown by port .use. Two-olampmg mem which the base and supmay be secured in desired position in hers 14 provided 0. SnssmNs, a

'18 serves to s ring the members 14 Serial No. 304,023.

' with projecting legs 15 extending into the aperture llare provided, these legs ending Y inprojecting toes or flanges 16' entering the largerfportion12 of the aperture through v 6 toes. and the shoulder in said aperture preijvents'the withdrawal of said members from the'base'whe'n inuse. The nembersl i pro-.

ject' outwardly from the base in semi-circular conformation to surround cylindrical insulator 17 v to be'heldin" place-by v the support. =A,'clarnping bolt 18 extends through the outer ends of the members 14 to hold .them in-clamping relation relatively "to the said insulator. thereon between the insulator and the base Themembers ltha've formed and p referably adjacent the insulator, bosses 19 so'c'onformed that the action of the bolt 18 in. moving the members to their clamping against the: portion through the base before-said members engage the outer surface of the insulator. As a .resultthe clamping members-are rigidly secured'to the base before anyclamping ac ly to permit with the outer with any desired degree of pressure. 'eilit'ate the operation described each with an inner surface 20 of slightly greater radius than the radius of the insulator to be supported" by the clamping members, the projecting end 21 of the clamping. member being displaced" suf-liciently back of a central plane throughthe face of the boss 19 so that when said member isforced into a clamping position .as shown in Fig. 1 the projecting end 21 will not engage the corresponding end :of the other member. For the best re sults, the conformationof the inner surfaces of the members 1-4 should to, account the metal listribution in said nienibcrs, that the stress in said members distributed uniformly or substantially so throughout their length along the portions of said members-1st adjacent the insulator to be clamped thereby, or in other words there shall be a uniform and slight distortion of the members 14 by the clamping action throughout said portions of the said memositionbrings the bosses lQ 'fir-m'ly together and at the same time moves the" toes 16 firm- 12 ofthe aperture TATES}.PATENT; orrioaf;3?,

Go;- rumors, Assron'oa 'ro ALBERT '0.- BELIL, 'rnusrnn',

or. CHICAGO, ILLINOIS.

-bers; in some; cases the curvature. of the inner surfaces of the members 14 may have a single radius of curvature somewhat larger than the radius of the insulator to be clamped by the members and in other cases the said inner curvature may result from the useof an increasing radius of curvature from the bosses 19 along the clamping surfaces of said members; it will be understood however that my invention includes any curvature of the sufaces 20 such that the metal adjacent said surfaces will be sprung when the bolt 18 is tightened to clamp the insulator. I

The support may be made of iron or steel castings or in any other manner that will afford a rigid base and clamping arms having suflicient spring and resilience to operate in the manner described. For use with alternating current, however, it is desirable that at least one of the clamping members let shall be of nonanagnetic metal, such for example as brass or bronze, and that said members shall be of skeleton construction as indicated in Fig; 2.

The insulator 17 may either be a split insulator as shown in the drawing or a one piece insulator depending upon the conditions of use and while the insulator support described is particularly adapted to the mounting of insulators for supporting cables and large conductors extending through the insulators, I do not limit myself in using my insulator support, to insulators of this type as the support may be employed with any form of insulator adapted to be held in position by the clamping action referred to.

In mountingthe supports for use, by removing the clamping bolts, the clamping members may be removed from the bases, there beinga suflicient clearance between the legs 15 to permit the toes 16 to clear the smaller portion of the apertures through the bases. The bases may thus be installed separately in proper position relatively to each other with the clamping members removed and furthermore each base may be located angularly upon its support in any positionwhich will receive the base and permit its being secured to its support to the best advantage since the aperture 11 and the recess 12 are of circular conformation thus permitting the clamping members to be turned in the bases until they line up with each other.

-As a result the clamping membersare not put in place until the cable or conductor is strung, and danger of breaking projecting parts before the electrical conductor is in place is thus eliminated.

The construction shown in Figs. 5 and 6 is similar to that above described, the only differcnce being that thebase 10 is replaced by a base 22 having a semi-cylindrical conformation to engage a cylindrical support 23 such as a pipe or a rod to which the-base 22- may be secured by means of a clamping plate 24 and bolts 25 as indicated, the plate 24 being preferably conformed to fit the ey lindrical support 23. The base 22 has formed thereon a projecting boss 26 containing an aperture andenlarged recess the same as the aperture 11 and recess 12 above described for receiving the clamping members and permitting their operation 1n the same connection wlth Figs.

manner described in 1, 2 and 3. 1

lVhile I have shown my invention in the perpendicular respectively to the axis of said opening, two metallic clamping meme bcrs each extending at one endinto said opening and having at its end atoe project: ing laterally andprovided with surfaces fitting the right angle surfaces of said recess,

' each of said members having a boss adjacent said base extending towards the axis of said opening and formed outside ofsaid boss to clamp an insulator, and devices for forcibly moving the outer ends of said members together to clamp an insulator between said members, said bosses being in firm'engage- Y ,ment with each other and'said toes firmly engaging the surfaces of said recess before said members are moved into clamping engagement with saidinsulator, the'insulator clamping portions of said members being conformed to yield under said clamping,

actioirto firmly engage the insulator.

2. In an insulator support, the combina tion of a metallic base having a circular opening therein, said 'opening having at its inner portion a coaxial circular recess, two metallic clamping members each extending at one end into said opening and havingat its end a toe projecting laterally to enterv said recess, each of said members having a boss ad acent said base extending towards the axis of said opening and formed'outside of said boss to hold an insulator, and

devices for forcibly moving the outer ends of said members together to hold an insula-. tor between said members, said bosses oeing in firm engagementwith each other and'said toes firmly engaging the surface of said rccess before said-members are forced towards each other'to their insulator supporting position, the insulator supporting portions of said member being conformed to yield under said action to firmly engage the insulatoiz -3-. In an insulator support the combination of a metallic base having a circularopening therein said opening having at its inner portion a co-axlal circular recess, two

- metallic clal'npin'gmembers each extending said boss to hold uninsulator, and devicesfor forcibly moving the outer ends of said members'together to hold an insulator be tween said members, said bosses being in firm engageinei'itwvitli each other and said toes firmly engaging the surface of said re cess before said members are forced towards each other to their insulator supporting po sition. I a

Inwitness'whereof, I have hereunto subscribed my name this 3rd day of June A. l). 1919. v

nsoN o. SESSIONS. 

